Design Studies of a Photocathode RF Gun for Short-Wavelength FELs

ZHAO Qiang; LI Yong-Gui

Chinese Physics C> 2001, Vol. 25> Issue(7) : 696-700

Design Studies of a Photocathode RF Gun for Short-Wavelength FELs

ZHAO Qiang ^, ,
LI Yong-Gui

Institute of High Energy Physics, The Chinese Academy Sciences, Beijing 100080, China

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Abstract：
Low emittance and high intensity electron beams are needed for the high gain, short wavelength FELs. To meet the requirements of the proposed DUV FEL facility in Shanghai, we designed a 1.5-cell, S-band photocathode RF gun using the emittance compensation techniques. Based on the simulation codes of POISSON, SUPERFISH and PARMELA, this design aims at producing a beam of ε_n,rms=2.3π·mm·mrad, Q=2nC/bunch, E_k=4.8 MeV at the gun exit with the field gradient of 100MV/m on the cathode. In this paper, we present the design considerations and the simulation results.

References

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ZHAO Qiang and LI Yong-Gui. Design Studies of a Photocathode RF Gun for Short-Wavelength FELs[J]. Chinese Physics C, 2001, 25(7): 696-700.

ZHAO Qiang and LI Yong-Gui. Design Studies of a Photocathode RF Gun for Short-Wavelength FELs[J]. Chinese Physics C, 2001, 25(7): 696-700. shu

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Received: 2000-05-16
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Design Studies of a Photocathode RF Gun for Short-Wavelength FELs

ZHAO Qiang ^,
LI Yong-Gui

Corresponding author: ZHAO Qiang,

Institute of High Energy Physics, The Chinese Academy Sciences, Beijing 100080, China

Received Date: 2000-05-16
Accepted Date: 1900-01-01
Available Online: 2001-07-05

Abstract: Low emittance and high intensity electron beams are needed for the high gain, short wavelength FELs. To meet the requirements of the proposed DUV FEL facility in Shanghai, we designed a 1.5-cell, S-band photocathode RF gun using the emittance compensation techniques. Based on the simulation codes of POISSON, SUPERFISH and PARMELA, this design aims at producing a beam of ε_n,rms=2.3π·mm·mrad, Q=2nC/bunch, E_k=4.8 MeV at the gun exit with the field gradient of 100MV/m on the cathode. In this paper, we present the design considerations and the simulation results.